Comparison of optical character recognition software

申明：本文非笔者原创，原文转载自：http://en.wikipedia.org/wiki/Comparison_of_optical_character_recognition_software

This comparison of optical character recognition software includes:

• OCR engines, that do the actual character identification
• Layout analysis software, that divide scanned documents into zones suitable for OCR
• Graphical interfaces to one or more OCR engines
• Software development kits that are used to add OCR capabilities to other software (e.g. forms processing applications, document imaging management systems, e-discoverysystems, records management solutions)

Name	Founded year	Latest stable version	Release year	License	Online	Windows	Mac OS X	Linux	BSD	Programming language	SDK?	Languages	Fonts	Output Formats	Notes
Tesseract	1985	3.02	Oct 2012	Apache	No	Yes	Yes	Yes	Yes	C++, C	Yes	35+[1]	?	Text,hOCR,[2]others with different user interfaces[3]or the API	Created by Hewlett-Packard; under further development by Google[4] It was one of the top 3 engines in the 1995 UNLV Accuracy test.
ExperVision[5]TypeReader & RTK	1987	7.1.170.1125	2010	Proprietary	Yes	Yes	Yes	Yes	Yes	C/C++	Yes	21	2618		Won the highest marks in the independent testing performed byUNLV for X consecutive years (in 1994).[6][citation needed] The speed of ExperVision’s OpenRTK is four to eight times faster than competition. — PC Magazine[7] but also "Not as accurate as rival products, clumsy interface, limited options for proofreading, couldn't open some files in standard PDF or image formats."[8] PC Magazine
ABBYY FineReader	1989	11	2011	Proprietary	Yes	Yes	Yes	Yes	Yes	C/C++	Yes	198[9]	?	DOC, DOCX, XLS, XLSX, PPTX, RTF, PDF, HTML, CSV, TXT, ODT, DjVu, EPUB, FB2[10]	ABBYY also supplies SDKs for embedded and mobile devices. Professional, Corporate and Site License Editions for Windows, Express Edition for Mac.[11]
AnyDoc Software	1989	?	?	Proprietary	No	Yes	No	No	No	VBScript	?	?	?		Works with structured, semi-structured, and unstructured documents.
Aquaforest OCR SDK	2001	1.41	2013	Proprietary	Yes[12]	Yes	No	No	No	C#, VB.NET, ASP.NET	Yes	23	OmniFont (Extended Module available, including support for over 100 languages)[13]	PDF, PDF/A, RTF, TXT	Aquaforest's[14] OCR SDK for .NET[15]enables developers to directly make use of the Aquaforest OCR engine in their own applications and create searchable PDFs, RTF or text files from TIFFs, Bitmaps and Image-Only PDFs.
LEADTOOLS[16]	1990[17]	18.0	2013	Proprietary	Yes	Yes	Yes	Yes	No	C/C++, .NET, Objective-C, Java, JavaScript	Yes	56[18]	Any printed font	PDF, PDF/A, DOC, DOCX, XLS, XPS, RTF, HTML, ANSI Text, Unicode Text, CSV[19]	Supports Latin, Asian, Arabic, and MICR character sets.[16] For full page, zonal, and form image processing. Includes OCR, barcode, OMR and forms recognition.[20] ICR (handwritten text recognition) is supported.[21]
CuneiForm/OpenOCR	1996	12	2007	BSD variant	No	Yes	Yes	Yes	Yes	C/C++	Yes	28	Any printed font	HTML, hOCR, native, RTF,TeX, TXT[22]	Enterprise-class system, can save text formatting and recognizes complicated tables of any structure
Transym OCR	2000	3.3	2011	Proprietary	No	Yes	No	No	No	C#, C/C++, VB, VB.NET	Yes	11	?
Image to OCR Converter	2010[23]	1.2[24]	2012	Proprietary	No	Yes	No	No	No	C/C++, VB and .NET	Command Line	40	?	SearchablePDF, Text-Only PDF, Word, HTML, Text[25]	It can read most image formats and pdf files, and can scan images from scanner or camera.[26][27]
SimpleOCR	2002	3.5	2008	Proprietary	No	Yes	No	No	No	?	?	?	?
Dynamsoft OCR SDK	2003	8.2	2012	Proprietary	Yes	Yes	No	No	No	C/C++	Yes	40+[28]	?	PDF, TXT	Dynamsoft is the leading provider of image capture SDKs and version control tools.
OmniPage	2005	18	2011	Proprietary	No	Yes	Yes	Yes	No	C/C++, C#[29]	Yes	?	?		Product of Nuance Communications
Microsoft Office OneNote 2007	2007	?	2007	Proprietary	No	Yes	No	No	No	?	?	?	?
FreeOCR	?	4.2	August 2012	Proprietary	No	Yes	No	No	No	?	?	?	?		[30]
GOCR	?	0.49	2010	GPL	Yes[31]	Yes	Yes	Yes	Yes	C	?	?	?
Ocrad	?	0.21[32]	2011	GPL	Yes	Yes	Yes	Yes	Yes	C++	Yes	Latin alphabet	?		Command line
SmartScore	?	?	?	Proprietary	No	Yes	Yes	No	No	?	?	?	?		For musical scores
Microsoft Office Document Imaging	?	Office 2007	2007	Proprietary	No	Yes	No	No	No	?	?	?	?		Uses OmniPage[citation needed]
Puma.NET	?	?	?	BSD	No	Yes	No	No	No	C#	Yes	28	Any printed font		.NET OCR SDK based on Cognitive Technologies' CuneiForm recognition engine. Wraps Puma COM server and provides simplified API for .NET applications
ReadSoft	?	?	?	Proprietary	No	Yes	No	No	No	?	?	?	?		Scan, capture and classify business documents such as invoices, forms and purchase orders integrated with business processes.
Scantron	?Cognition	?	?	Proprietary	No	Yes	No	No	No	?	?	?	?		For working with localized interfaces, corresponding language support is required.
OCRFeeder	?	0.7.11	2009	GPL	No	No	No	Yes	No	Python	?	?	?		Features a full user interface and has a command-line tool for automatic operations. Has its own segmentation algorithm but uses system-wide OCR engines likeTesseract or Ocrad
OCRopus	?	0.6	2012	Apache	No	No	No	Yes	No	Python	?	?	?	hOCR, HTML, TXT[33]	Pluggable framework under active development, used forGoogle Books
Name	Founded year	Latest stable version	Release year	License	Online	Windows	Mac OS X	Linux	BSD	Programming language	SDK?	Languages	Fonts	Output Formats	Notes